JPH03113597A - Extraordinally noisy vehicle detection system - Google Patents

Abstract

PURPOSE:To discriminate the cause of an extraordinal noise at real time by transmitting sound level data and picture data from terminal equipment to a central device when a sound level exceeds a prescribed level and displaying this picture data on a monitor display provided at the central device. CONSTITUTION:When the sound level detected by a sound sensor 2 is decided to exceed the prescribed level by a level deciding means 15, the sound level data detected by the sound sensor 2 is transmitted to the central device C together with the picture data image-picked up by an image pickup means 5, and the picture data is displayed at real time on the monitor display 25. Thus, by observing a displayed picture, it can clearly discriminated if the extraordinal noise is caused by the intentional extraordinal noise generating action of the reckless drivers.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a detection system for an abnormally noisy vehicle that emits noise exceeding a specified level (abnormal noise).

<Prior Art> Motorcycles driving on roads with their mufflers removed or engines revving and making abnormal noises cause a great deal of inconvenience to roadside residents, and have become a social problem as noise pollution.

Conventionally, the appearance of abnormally noisy vehicles has been detected only through reports to the police from roadside residents and passersby, and patrols conducted by police stations.

However, roadside residents and passersby do not always report, and even when they do, there is a delay in hesitation before deciding to report, or it takes time to respond by phone. Even when patrol cars receive a radio call and rush to the scene, in most cases the abnormally noisy vehicles have already fled, and the current situation is that effective enforcement is not possible.

Furthermore, the probability that a patrol car will encounter an unusually noisy vehicle is not very high.

Therefore, terminal equipment 6 equipped with an acoustic center such as a microphone to detect abnormal noise was installed at key points along the road, and the acoustic sensor of the terminal equipment detected the acoustic signal and converted it into a digital sound level. By transmitting data together with terminal device identification data to a central device in a monitoring center, the appearance of abnormally noisy vehicles and their locations are detected,
A crackdown system was devised in which patrol cars receive radio contact from a surveillance center and rush to the scene.

The terminal device identification data is assigned a different code for each terminal device, and corresponds to the location where the terminal device is installed.

In addition, there is a type in which the central device side determines whether or not the acoustic signal detected by the acoustic sensor exceeds a specified level.
It is considered to be a type that is performed on the terminal device side. In the latter case, when it is determined that the acoustic signal exceeds a specified level, an abnormal signal is transmitted from the terminal device to the central device.

With a system like this, it is possible to constantly and in real time detect the appearance of abnormally noisy vehicles and their appearance locations.

<Problem to be solved by the invention> However, such conventional systems can only detect the occurrence of abnormal noise and its location;
It is difficult to distinguish between whether a motorcycle gang intentionally caused abnormal noise at that location, or whether a general driver temporarily made a loud noise or a loud noise was made by roadside residents or passersby. Can not.

Therefore, it is very wasteful to dispatch a patrol car to the scene every time abnormal noise is detected.

In addition, since abnormal noises are detected constantly and in real time, wireless communication from the monitoring center to the patrol car becomes faster, but when the patrol car rushes to the scene, the abnormal noise vehicle has already fled. In most cases there is.

And what can be recorded at the monitoring center is the level of abnormal noise, abnormal noise and light? The problem is that it is impossible to obtain reliable evidence because there is no way to ascertain the relationship between the intentional abnormal noise light η2 act and the abnormal noise vehicle. there were.

The present invention has been made in view of the above circumstances, and is intended to identify whether or not the cause of abnormal noise is an intentional act of generating abnormal noise, and to distinguish between an intentional act of generating abnormal noise and an abnormally noisy vehicle. The purpose is to make it possible to grasp the correspondence relationship with certainty.

<Means for Solving the Problems> In order to achieve the above object, the present invention has the following configuration.

That is, the abnormal noise vehicle detection system of the present invention includes an acoustic sensor that detects sounds emitted from a vehicle, and an abnormal noise vehicle detection system that detects sounds emitted from a vehicle.
an imaging means for photographing the 11 cars, a terminal device installed along the roadside with the acoustic sensor and the imaging means as an anchor, and a level for determining whether the sound level detected by the acoustic sensor exceeds a specified level. determining means, means for transmitting sound level data and image data from the terminal device to a central device when a prescribed level is exceeded, a monitor display for displaying the image data transmitted to the central device, and a central device. The apparatus is characterized in that it is equipped with an evidence memory for storing sound level data and image data transmitted to the apparatus.

<Effect> The effects of the above configuration of the present invention are as follows.

That is, when the level determination means determines that the sound level detected by the acoustic sensor exceeds a specified level, the sound level data detected by the acoustic sensor is transmitted to the central device along with the image data captured by the imaging means. Since the image data is displayed in real time on the monitor display, by looking at the displayed image, it is possible to clearly identify whether the cause of the abnormal noise is the intentional act of generating abnormal noise by a motorcycle gang. .

Furthermore, since the sound level data and image data are stored in the evidence 1F memory, reliable evidence can be obtained.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing the electrical configuration of the abnormal noise vehicle detection system. As shown in the figure, the abnormal noise vehicle detection system of this embodiment includes a terminal device A installed at key points along the road, a data collection device B built in a signal controller, and a monitoring center installed. It consists of a central device C.

Terminal device A includes a microphone 2 as an acoustic sensor,
An amplifier 3 that amplifies the acoustic signal detected by the microphone 2
and A, which converts the amplified acoustic signal into a digital signal.
/1] A converter 4, a still video camera 5 as an imaging means, a video memory 6 that stores still image data captured by the still video camera 5, and data compression of the still image data read from the video memory 6. an image compression circuit 7, and a wireless terminal that FM-modulates the sound level data output from the A/D converter 4 and the compressed still image data output from the image compression circuit 7, and transmits the same to the data collection device B. It consists of a machine 8 and an antenna 9.

The data collection device B includes an antenna 10, both antennas 9,
10 and the wireless terminal of the terminal bag WA via the wireless line 11! a wireless terminal 12 that is bidirectionally wirelessly connected to 118 and demodulates received data; a wireless control unit 13 that outputs a polling signal for the terminal device A to the wireless terminal 12 at a predetermined timing; a memory 14 that stores the received sound level data, a level determination section 15 that determines whether the sound level indicated by the received sound level data exceeds a specified level, a line control section 16, and a modulation/demodulation device (
modem) 17.

The central bag WC includes a modem 19 bidirectionally wire-connected to the modem 17 of the data collection device B via a wired line 18, a line control section 20, and a memory 21 for storing received data. , a display control section 22, a graphic panel 23, an image decompression circuit 24 for decompressing compressed still image data, a monitor display 25, a console 26, and a memory 27 for evidence materials.

FIG. 2 shows the appearance of the terminal bag WA.

As shown in the figure, in the terminal device A, a microphone 2 and a lens section 5a of a still video camera 5 are provided on the front surface of a main body 29 held at the upper end of a ball 28, and an antenna is provided on the top surface of the main body 29. 9 is provided. Microphone 2 and lens section 5 of still video camera 5
a is directed toward the vehicular traffic zone of the road.

FIG. 3 shows a situation where a plurality of terminal devices A to A7 are installed on the roadside near an intersection.

Each terminal device! The antenna 9 of FA+
Bidirectionally connected via. A data collection device B built in the signal controller 1 is bidirectionally connected to the central device C via an existing wired line 18 installed between the signal controller 1 and the monitoring center.

FIG. 4 shows the arrangement of the graphic spring 23 and the monitor display 25. The graphic panel 23 in the central device C consists of a combination of a road network map 31 and a lamp 32 indicating the location of the terminal device A installed within the area indicated by the road network map 31. A plurality of monitor displays 25 are arranged. The lamp 32 changes color depending on the sound level.

Next, the operation of the abnormal noise vehicle detection system of this embodiment will be explained.

The microphone 2 in the terminal device A constantly inputs surrounding sounds and converts them into electrical signals.

After this acoustic signal is amplified by the amplifier 3, the A/D
The converter 4 converts the data into digital sound level data, which is output to the wireless terminal 8.

Further, the still video camera 5 also constantly photographs the surrounding situation and stores l frames of still image data in the video memory 6.

Such operations are constantly performed in the same way in all terminal bags KA, ~A7. However, when the wireless terminal 8 in each terminal device A receives the all-terminal boring signal from the data collection device iB and specifies its own terminal number, the wireless terminal 8 in each terminal device A modulates the sound level data and transmits it from the antenna 9. At the same time, when a transmission request signal is received from the data collection device B, the still image data is read out from the video memory 6, the still image data after data compression by the image compression circuit 7 is manually input, and the sound level data and the compressed still image data are The still image data is folded and FM modulated, and the FM modulated signal jl is transmitted from the antenna 9.

Next, the transmission and reception of boring signals and data between the terminal devices A, -A and the data collection device B will be explained based on the time chart of FIG. 5.

The wireless control unit 13 of the data collection bag fiB first sends an all-terminal polling signal 11s to the wireless terminal a12, and sends the all-terminal polling signal 11s to all the terminal devices through the wireless terminal 12 and antenna 10 to ~A. Transmit the bowling signal PSo. Each of the terminal devices A1 to A7 is polled sequentially according to the order of terminal numbers specified in advance.

In other words, the order of terminal numbers is A + = A z →...
...--Assuming that it is AR, first, the wireless terminal 8 of the terminal bag WA1 is polled, and the sound level data S, which is input to the wireless terminal 8 at that time, is FM-modulated and transmitted from the antenna 9. , is received and demodulated by the wireless terminal 12 of the data collection device B via the wireless line 11 and the antenna IO, and is pre-allocated by the wireless controller 13 (time slot) T+ via the memo January 4
is memorized.

Next, the terminal device A2 is polled, and the sound level data S2 is stored in the memo January 4 via the time slot throat T2. Thereafter, in the same manner, the terminal devices A, l""A
, l are polled sequentially, and the sound level pigs S, ~S
, , respectively correspond to the time slot soto 1゛3~T,
, and are stored in the memory 14 via .

1 In data collection device B, all terminal devices A1 to A
, l are the sound level data S1 to S, l in the memory 14.
, the level determination unit 15 sequentially reads out the sound level data 81 to S from the memo IJ14, determines whether each of the sound level data S1 to S, exceeds the specified level, and determines whether the individual sound level data S1 to S1 exceed the specified level. Determine the terminal number corresponding to the sound level data.

The wireless control unit 13 outputs a boring signal including a terminal number exceeding a specified level and a transmission request signal to the wireless terminal 12 in the next polling cycle, and transmits the boring signal via the antenna 10. If there are multiple terminal devices with a higher sound level than the specified level, polling is performed sequentially, giving priority to the terminal device with a higher sound level.

In the example of FIG. 4, the i-th and the i-th terminal bags fiA,
, 8, the sound level Si, S, captured by the terminal device A, exceeds the specified level, and the force of the sound level S, captured by the terminal device A, is equal to the sound level Sk, captured by the terminal device Ak.
We assume a case where the value is higher than ′ζ2.

Terminal device A designated with terminal number i by boring signal PSs including a transmission request signal from data collection bag NB
, compresses the still image data P stored in the video memory 6 in the image compression circuit 7, and generates the compressed still image data P.

and sound level data S! is FM-modulated by the wireless terminal 8 and transmitted to the data collection bag WB via the antenna 9. The wireless terminal 12 of the data collection device B demodulates the received FM modulation signal and stores the sound level data and still image data P in the memory 14 together with the terminal device identification data i.

Next, the terminal device A1, which has received the boring signal PSk including the transmission request signal specifying the terminal number k, transmits the compressed still image data Pk and the sound level data S in the same manner as described above.
k is FM-modulated by the wireless terminal 8 and transmitted to the data collection device B. The sound level data SIl and still image data Pk demodulated by the wireless terminal 12 are stored in the memory 14 along with the terminal device identification data.

Next, the line control unit 16 of the data collection device B reads the data stored in the memory 14 in order from the highest sound level, and transmits the data to the central device C. In the above case, first, the terminal device Hi7 identification data i, the sound level data S, and the compressed still image data P8 are read out and transmitted to the modem device 19 of the central device C via the modem device 17 and wired line 18. Then, the terminal device identification data i, sound level data S, and compressed still image data P received via the line control unit 20 are stored in the memory 21.

Next, the terminal device identification data k read out from the memory 14
, sound level data Sk and compressed still image data Pk are similarly transmitted to the central device C and stored in the memory 21.

The display control unit 22 of the central device C displays the terminal device rI? from the memory 21. Identification data i, and sound level data Si
, S, and causes the lamp 32 on the graph ink panel 23 corresponding to the terminal device identification data to blink. Light equipment 3
2 flashes in different colors depending on the sound level. For example, if the number is 90 or more but less than 100, it flashes in orange, and if it is 100 or more, it flashes in red.

Note that when the sound level detected by the microphone 2 is less than 90 phons, there is no signal (1Y) from the data collection device B, and at this time it is always lit in green.

When the controller specifies the number of the lamp 32 blinking on the graph ink panel 23 and the number of the monitor display 25 on the console 26, the display control unit 2
2 reads out the corresponding compressed static image data from the memory 21, and after this data is decompressed in the image decompression circuit 24, the terminal device A detecting the abnormal noise exceeding the specified level is displayed on the designated monitor display 25. ,,A,
A still image taken with is displayed.

The controller looks at the still image displayed on the monitor display 25 and determines whether or not the cause of the abnormal noise exceeding the specified level is the intentional act of generating abnormal noise by the motorcycle gang. 5. If it is determined that the abnormal noise was caused by an act causing abnormal noise, the controller will wirelessly inform the patrol car of the location of the abnormally noisy vehicle, the number of the abnormally noisy vehicle, etc.

At the same time, the controller operates the console 26 to
Its static 11-corresponds to the image? The sound record data, still image data, and terminal device identification data are read from the memory 21, and the abnormal noise generating act and other necessary data are added thereto and registered in the evidence memory 27.

As described above, when abnormal noise is detected, still image data is transmitted from the terminal device A to the central device C via the data collection device B, and the still image data is displayed on the monitor display 25! It is possible to determine whether the cause of the abnormal noise is due to the intentional act of generating abnormal noise by the motorcycle gang, and the radio communication of enforcement to the patrol car indicates that it was caused by the intentional act of generating abnormal noise. Since this is carried out based on the judgment, the efficiency and speed of controlling abnormally noisy vehicles can be improved.

1j Even if the abnormally noisy vehicle has escaped when the patrol car rushes to the scene, the evidence memory 27 still contains still image data showing the vehicle number, vehicle type, driver, passenger, etc. Since evidence remains, it can be effectively used for later arrests.

The present invention also includes the following configuration as an example.

(i) As the image capturing means, a video camera that captures a moving surface may be used instead of a still video camera that captures still image data.

(ii) Wirelessly connect data collection device B built in signal controller 1 to the terminal device via wireless line ll, and connect data collection device B and central device C to the existing wired line for signal control ml. Instead of connecting via 18, the terminal device A and the central device C may be connected via a dedicated wired line.

In this case, the wireless terminals 8, 12, antennas 9, 10, etc. are unnecessary, and the data control unit, memo 4, level determination unit 15, line control unit 16, modulation/demodulation device 17 in place of the wireless control unit 13, It will be installed in terminal device A.

(iii) Instead of displaying the abnormal noise occurrence location on the graphic panel 23, the monitor display 25 may be configured to display the abnormal noise occurrence location and the sound level together with the image.

<Effects of the Invention> From the above, according to the present invention, the following effects are achieved.

That is, the terminal device is equipped not only with an acoustic sensor that detects the sound emitted from the vehicle, but also with an imaging means for photographing the vehicle, and with a level determination means that determines whether the sound level exceeds a specified level. , the terminal device transmits the sound level data and image data to the central device when the specified level is exceeded, and the image data is displayed on the monitor display provided in the central device, so the displayed image By looking at the real tights, it is possible to clearly identify whether the cause of the abnormal noise is due to the intentional abnormal noise light 71 act by the motorcycle gang.

When it is determined that there is an intentional act of generating abnormal noise, the patrol car is contacted by radio and rushed to the scene, eliminating the needless dispatch of patrol cars and making the crackdown on abnormal noise vehicles more efficient and faster. I can do it.

In addition, it is equipped with an evidence memory that stores the sound level data and image data transmitted to the central device, so even if the abnormally noisy vehicle has already fled when the patrol car rushes to the scene, Alternatively, even if a patrol car is not dispatched to the scene, sound level data and image data stored in the evidence memory can be used to provide reliable evidence that the intentional act of generating abnormal noise corresponds to the abnormally noisy vehicle. can be taken.

[Brief explanation of drawings]

1 to 5 relate to an embodiment of the present invention, in which FIG. 1 is a block diagram showing the electrical configuration of the abnormal noise vehicle detection system, FIG. 2 is an external view of the terminal device, and FIG. 3 is the terminal device. Figure 4 is an explanatory diagram of the installation status of the device, and Figure 4 is a layout diagram of the graph ink panel and monitor display installed at the visual inspection center. It is a time chart showing giving and receiving. A, ~A7...Terminal device C...Central device 2...Microphone (acoustic sensor) 5...Still video camera (imaging means) 15...Level judgment section (level judgment means) 17...・Modulator/demodulator 18...Wired line 19...Moder/demodulator 25...Monitor display 27...Memory for evidence materials

Claims (1)

[Claims] (1) an acoustic sensor that detects sounds emitted from a vehicle; an imaging device that photographs an abnormally noisy vehicle; a terminal device that is installed along a road and includes the acoustic sensor and the imaging device; Level determination means for determining whether or not the detected sound level exceeds a specified level; means for transmitting sound level data and image data from the terminal device to a central device when the detected sound level exceeds the specified level; and the central device. An abnormally noisy vehicle detection system comprising: a monitor display for displaying image data transmitted to a central device; and an evidence memory for storing sound level data and image data transmitted to a central device. .